"APIs Compatible with OpenAI for Conversational AI" matching MCP servers:

MCP server exposing all major Swiss official public APIs as native tools for any MCP-compatible AI agent.

MCP server providing official US economic data including CPI inflation, famous prices, national debt, and Treasury interest rates. Enables AI agents to query historical and latest economic statistics via natural language.

Torify gives AI agents the Japanese locale primitives that standard libraries lack — imperial era date conversion (wareki), qualified invoice number validation with NTA registry lookup, corporate number lookup (法人番号), postal code resolution, name romanization (Hepburn), and kanji-to-kana conversion via Yahoo! JLP. 31 endpoints total. No authentication required for MCP. Pay-per-call $0.02/call via

MCP server that silently monitors state changes in structured data sources (e.g., government open data) and provides a pull-based channel for AI agents to retrieve real mutations since their last cursor.

Provides AI assistants with specialized tools to interact with NIST's Open Security Controls Assessment Language (OSCAL) framework. It enables agents to retrieve schemas, explore models, and generate valid OSCAL documentation for security compliance automation.

Provides AI assistants with locally bundled tools to explore NIST OSCAL models, retrieve schemas, list community resources, and generate valid OSCAL templates for governance, risk, and compliance workflows.

MCP server for OFAC SDN sanctions screening. Check names against US Treasury sanctions lists with automatic cache refresh. No API key needed for the check itself.

MCP server for Vaquill legal research API. Covers US federal + 50-state law (USC, CFR, state legislation, CourtListener case law)

An MCP server providing structured intelligence about the EU AI Act, including risk classification, deadline tracking, obligations, penalties, and article lookups.

Public-record corpus of AI litigation, regulation, and enforcement, anchored to EveryAILaw.

Provides read-only, citation-grounded Chinese AI compliance and filing Q&A, enabling agents to search regulations, retrieve requirements, generate self-check lists, and determine filing obligations with legal basis.

MCP server for analyzing Canadian federal spending data, offering tools for contract search, NLP, semantic search, anomaly detection, and money-flow tracing.

Provides AI-powered access to Turkish building regulations, architectural standards, and construction calculation tools via the Model Context Protocol.

Enables review-gated, local-first monitoring of AI legislation, regulations, litigation, sanctions, court rules, and ethics guidance by collecting and verifying leads from official sources, managing human review workflows, and generating digests and exports.

UK skip hire compliance MCP. Provides Waste Carrier Registration, EWC codes, and consignment notes.

Enables compliance checks and management for UK New Roads and Street Works Act (NRSWA), including licence checks, work classification, and overrun calculations.

Muckaway AI MCP provides tools for UK waste management compliance, including waste classification, disposal facility lookup, duty of care documentation, and waste transfer notes.

A collection of MCP servers that connect AI assistants to Spanish open government data, including statistics, legislation, land registry, and weather forecasts.

Enables real-time compliance checking of industrial water and air emissions against CPCB standards using tools for water quality, air emissions, and compliance evaluation.

A Python FastMCP server that re-exposes Kindora's public funder and grant tools for ChatGPT, enabling grant discovery from IRS 990 filings and Grants.gov.